code: def setUp(self):
      self.c2 = torch.Tensor(1, 8, 64, 64)
      self.c3 = torch.Tensor(1, 8, 32, 32)
      self.c4 = torch.Tensor(1, 8, 16, 16)
      self.c5 = torch.Tensor(1, 8, 8, 8)
      self.fpem = FPEM(in_channels=8)
  
file_path: mmocr/tests/test_models/test_textdet/test_necks/test_fpem_ffm.py
imports: import unittest
  import torch
  from mmocr.models.textdet.necks.fpem_ffm import FPEM, FPEM_FFM
label_desc: Use image node_id 1 for calling the TestFPEM obj's underlying member method code with example usage: obj.setUp() without return types